Prusa MINI Firmware overview
pins_MINITRONICS.h
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1 /**
2  * Marlin 3D Printer Firmware
3  * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
4  *
5  * Based on Sprinter and grbl.
6  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
7  *
8  * This program is free software: you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation, either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program. If not, see <http://www.gnu.org/licenses/>.
20  *
21  */
22 #pragma once
23 
24 /**
25  * Minitronics v1.0/1.1 pin assignments
26  */
27 
28 /**
29  * Rev B 2 JAN 2017
30  *
31  * Added pin definitions for M3, M4 & M5 spindle control commands
32  *
33  */
34 
35 #ifndef __AVR_ATmega1281__
36  #error "Oops! Select 'Minitronics' in 'Tools > Board.'"
37 #elif HOTENDS > 2 || E_STEPPERS > 2
38  #error "Minitronics supports up to 2 hotends / E-steppers. Comment out this line to continue."
39 #endif
40 
41 #define BOARD_INFO_NAME "Minitronics v1.0/1.1"
42 //
43 // Limit Switches
44 //
45 #define X_MIN_PIN 5
46 #define X_MAX_PIN 2
47 #define Y_MIN_PIN 2
48 #define Y_MAX_PIN 15
49 #define Z_MIN_PIN 6
50 #define Z_MAX_PIN -1
51 
52 //
53 // Steppers
54 //
55 #define X_STEP_PIN 48
56 #define X_DIR_PIN 47
57 #define X_ENABLE_PIN 49
58 
59 #define Y_STEP_PIN 39 // A6
60 #define Y_DIR_PIN 40 // A0
61 #define Y_ENABLE_PIN 38
62 
63 #define Z_STEP_PIN 42 // A2
64 #define Z_DIR_PIN 43 // A6
65 #define Z_ENABLE_PIN 41 // A1
66 
67 #define E0_STEP_PIN 45
68 #define E0_DIR_PIN 44
69 #define E0_ENABLE_PIN 27
70 
71 #define E1_STEP_PIN 36
72 #define E1_DIR_PIN 35
73 #define E1_ENABLE_PIN 37
74 
75 //
76 // Temperature Sensors
77 //
78 #define TEMP_0_PIN 7 // Analog Input
79 #define TEMP_1_PIN 6 // Analog Input
80 #define TEMP_BED_PIN 6 // Analog Input
81 
82 //
83 // Heaters / Fans
84 //
85 #define HEATER_0_PIN 7 // EXTRUDER 1
86 #define HEATER_1_PIN 8 // EXTRUDER 2
87 #define HEATER_BED_PIN 3 // BED
88 
89 #ifndef FAN_PIN
90  #define FAN_PIN 9
91 #endif
92 
93 //
94 // Misc. Functions
95 //
96 #define SDSS 16
97 #define LED_PIN 46
98 
99 //
100 // LCD / Controller
101 //
102 #define BEEPER_PIN -1
103 
104 #if ENABLED(REPRAPWORLD_GRAPHICAL_LCD)
105 
106  #define LCD_PINS_RS 15 // CS chip select /SS chip slave select
107  #define LCD_PINS_ENABLE 11 // SID (MOSI)
108  #define LCD_PINS_D4 10 // SCK (CLK) clock
109 
110  #define BTN_EN1 18
111  #define BTN_EN2 17
112  #define BTN_ENC 25
113 
114  #define SD_DETECT_PIN 30
115 
116 #else
117 
118  #define LCD_PINS_RS -1
119  #define LCD_PINS_ENABLE -1
120 
121  // Buttons are directly attached using keypad
122  #define BTN_EN1 -1
123  #define BTN_EN2 -1
124  #define BTN_ENC -1
125 
126  #define SD_DETECT_PIN -1 // Minitronics doesn't use this
127 #endif
128 
129 //
130 // M3/M4/M5 - Spindle/Laser Control
131 //
132 #if HAS_CUTTER // assumes we're only doing CNC work (no 3D printing)
133  #undef HEATER_BED_PIN
134  #undef TEMP_BED_PIN // need to free up some pins but also need to
135  #undef TEMP_0_PIN // re-assign them (to unused pins) because Marlin
136  #undef TEMP_1_PIN // requires the presence of certain pins or else it
137  #define HEATER_BED_PIN 4 // won't compile
138  #define TEMP_BED_PIN 50
139  #define TEMP_0_PIN 51
140  #define SPINDLE_LASER_ENA_PIN 52 // using A6 because it already has a pullup
141  #define SPINDLE_LASER_PWM_PIN 3 // WARNING - LED & resistor pull up to +12/+24V stepper voltage
142  #define SPINDLE_DIR_PIN 53
143 #endif